Differential diagnosis is necessary because bites of bed bugs can be mistaken for bites of fleas, mosquitoes or other blood-sucking insects.
How to distinguish a flea bite from a bug bite? The flea bites are localized, as a rule, on the lower part of the legs - in the area of the ankles.
How to distinguish a mosquito bite from a bug bite? The trace of a mosquito bite appears in the form of a rapidly increasing rounded swelling, in some cases a small dot can be seen in its center. In addition, at the moment of the bite a person can feel a burning sensation. "Shishka" in the place of the mosquito attack quickly turns red, it becomes hard to the touch and very much itch.
How to distinguish scabies from bite bugs? Combs for scabies are more often in the wrists and fingers, in the folds of the elbows and under the knees, on the buttocks and hips, on the face and on the scalp. And the main difference between depriving and biting bugs is that with any kind of lichen it is necessary to desquamation (peeling) the skin.
In addition, bug bites should be differentiated from dermatological diseases such as erythema nodosa; bullous or herpetiform dermatitis; concomitant leukemia acute febrile dermatosis (Sweet syndrome).
Bites of forest and green bugs
The superfamily Pentatomoidea includes - shields or shield bugs - are referred to the suborder of Heteropterans, numbering almost seven thousand species. All of them and even their nymph larvae on the abdomen have glands that release a fetid liquid - the main defense against potential enemies. Why they got the name bug-stinker.
Most species of terrestrial bugs, for example, the harmful bug (Eurygaster integriceps) or gray-gray marble bug (Halyomorpha Halys) are known agricultural pests. So, the marble bug-stinker punctures the seeds and fruits of legumes, fruits, berries and vegetables and sucks their juice with their proboscis. That is, these insects are phytophages. So the bite of a bedbug is theoretically impossible.
Like the bug of the forest bug Pentatoma rufipes (red sham), Elasmucha grisea (gray scutcher) or Acanthosoma haemorrhoidale (deciduous kilevik), because they are all phytophages, and in their diet - only plant food.
Some woody bugs belong to predators, more precisely, to predators: they thrust out their caterpillars with their jaw-styled style, and sucked liquid from them with their proboscis. In the saliva of these bugs there are digestive enzymes, which they release into the body of the victim, which facilitates the extraction of pre-digested contents of the prey. It is clear that a person is not among the potential victims of a hungry forest bug.
Is it possible to bite a green bug? The most widespread in our latitudes is the arboreal green shooter Palomena prasina, which lives in deciduous plantations, the green bedbugs of the species Nezara viridula and Acrosternum hilare - in the gardens, in the fields, in the grass. Both are phytophagous. But the green bug Troilus luridus - a predator, but hunts only on caterpillars and larvae of beetles.
In late autumn, insects look for a warm place for wintering and can creep in or fly into houses and apartments. But whether they can bite people, it is not known.
But the flower bugs Anthocoris nemorum (having a tiny oval body, reflective wings and orange-brown limbs) peacefully sit on flowering plants in parks and gardens, but ... In anticipation of their potential food - aphids and ticks. British entomologists say that this insect can, if necessary, behave aggressively and bite a person: the bite will be scratching for a long time and slowly heal, but for health it is absolutely not dangerous.
The bite of a water bug
Water bugs belong to the suborder Heteroptera, superfamily Nepoidea, family of water meters (Infraorder Nepomorpha), subfamily Dipsocoromorpha. The most common are rod-shaped water cannons (Hydrometridae) and ten species of common water-bed bugs (Gerridae Hemiptera).
They adapted to life on the surface of fresh water and move through it due to the presence on their legs and body of a number of water-repellent villi; food for water meters are smaller insects, accidentally trapped in water. They do not bite a man.
But there is a genus Lethocerus of the family Belostomatidae - the largest waterbugs (up to 12 cm in length) that lives in the rivers and lakes of the Americas, East Asia and northern Australia. Here they are - the most real predators, eating waterworms, snails, crustaceans, fish and frogs. And the bite of a water bug-summercarus is considered one of the most painful among insect bites. But from a medical point of view, it is harmless. Yes, and to bite a person insect is extremely rare: usually he throws off the fetid liquid from his abdominal gland and immediately pretends to be dead.
Bite of a kiss bug
A real bug of life and health is bitten by a kiss of a bug bug - Triatoma infestans triatomic hematopoietic bug (other names are American bug predator, Chagas bug, cone-bearing bug), which predominantly inhabits the countries of South and Central America.
This bug carries unicellular parasites with trypanosoma cruzi, which cause dangerous Chagas disease, which leads to disruption of the heart, digestive and nervous system of a person. According to some reports, to date, infected with trypanosomes 16-18 million people around the world.
Researchers note that in the last decade and a half in Vietnam, another subspecies of triatomic bugs - Triatoma rubrofasciata or a large kiss bug inhabiting near human dwellings (in wood, dumps, in coops) has activated. In large cities (Hanoi, Danang, Ho Chi Minh), these bugs at night bite residents of multi-storey buildings.